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$149+ Cheap flights from Dayton to St. Louis (DAY - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — STL
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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Cheap flight deals from Dayton to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Dayton (DAY) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 2, 2025.

Round-trip from

$239
(American Airlines)

One-way from

$149
(American Airlines)

Popular in

April

Cheapest in

January

Average price

$313
From Dayton to Lambert-St Louis
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One-way flight from Dayton to Lambert-St Louis
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Highest demand for flights based on searches. 25% potential increase in price ($129 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Dayton to St. Louis

Cheapest flights from Dayton to St. Louis
Explore the most affordable flight options available from Dayton to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

This American Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/155:38 pmDAY - STL
1 stop3h 41mAmerican Airlines
Sat 7/197:23 amSTL - DAY
1 stop3h 57mAmerican Airlines
Deal found 6/29$239
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/257:18 pmDAY - STL
1 stop5h 35mDelta
Mon 7/286:00 amSTL - DAY
1 stop6h 44mDelta
Deal found 7/2$278
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1711:49 amDAY - STL
1 stop3h 48mUnited Airlines
Mon 7/215:30 pmSTL - DAY
1 stop5h 28mUnited Airlines
Deal found 7/2$443

Cheapflights Fare Finder

Customize your flight search to find flights from Dayton to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 2025.
Use the filters below to find and compare flights from Dayton to St. Louis that are best for you.

Fly from

Dayton

Fly to

St. Louis

Route

Depart

Return

Price

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Tue 7/15

5:38 pm-8:19 pm

1 stop3h 41m

Lambert-St Louis

Sat 7/19

7:23 am-12:20 pm

1 stop3h 57m

$239

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 7/25

7:18 pm-11:53 pm

1 stop5h 35m

Lambert-St Louis

Mon 7/28

6:00 am-1:44 pm

1 stop6h 44m

$278

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Thu 7/17

11:49 am-2:37 pm

1 stop3h 48m

Lambert-St Louis

Mon 7/21

5:30 pm-11:58 pm

1 stop5h 28m

$443

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Mon 9/15

5:16 pm-11:07 pm

1 stop6h 51m

$149

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Mon 7/14

7:18 pm-11:53 pm

1 stop5h 35m

$230

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Mon 9/15

7:45 pm-2:19 pm

2 stops19h 34m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Best time to book a flight from Dayton to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Dayton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Dayton to St. Louis

What is the cheapest month to book a flight from Dayton to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Dayton to St. Louis (average of $311). Flying from Dayton to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DAY to STL?

Find hourly flight availability from Dayton to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2025.

A simple way to save on the total cost of your ticket is to fly from Dayton to St. Louis in the morning. If you’re flexible enough to do this you can expect to save up to 41% on your trip compared to booking a flight at noon.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated July 2, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Dayton to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,983 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Dayton to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Dayton to St. Louis round-trip?

    According to our current data, American Airlines ($239), Delta ($278), and United Airlines ($443) offers the cheapest pricing from Dayton to St. Louis. These flights start at 35% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Dayton to St. Louis one-way?

    The cheapest airlines for a one-way flight from Dayton to St. Louis are American Airlines ($149), Delta ($230), and United Airlines ($300).

  • Can I find deals for flights from Dayton to St. Louis that include hotel bookings?

    Yes. In addition to deals on Dayton to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dayton to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dayton to St. Louis.

  • Can I find deals for business class flights from Dayton to St. Louis?

    Yes. Cheapflights offers flight deals from Dayton to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dayton to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Dayton to St. Louis (average of $311). Flying from Dayton to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Dayton?

Book flights to Dayton if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Festus
Chesterfield
Farmington

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Top 3 airlines flying from Dayton to St. Louis

Discover the top 3 airlines that operate flights from Dayton to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$338FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$323FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$235Average$387FlexibilityNo cancel feeOn-time69%

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